Shadow,
Did you even try to locate that registry entry? I can imagine that SP4 and SP2 are very similar. And if I am not mistaken, SP4 did not add any enhancement to the Windows File Protection scheme.. though I could be wrong.

Windows 2000 has a nifty feature called Windows File Protection that is intended to keep your system out of "DLL Hell." It does this by preventing certain system files, such as .dll's from being overwritten. If, for whatever reason, you decide that you want this feature turned off, you can do this with the following Registry key:

Hive: HKEY_LOCAL_MACHINE
Key: Software\Microsoft\Windows NT\CurrentVersion\Winlogon
Name: SFCDisable
Data Type: REG_DWORD
Value: FFFFFF9D

The above value will disable Windows File Protection. The default (enabled) is 0. Always use caution and frequent backups when editing the Registry.



I'd say that is your best bet, but then you are running the chance of making your installation worthless...

good luck with this.